Could you please add Up & Down Arrow keys? That way we could go up and down lines of text with the press of a key.

To make room for them could you please remove the 'forward delete' key (but allow us to shift+delete to it instead, i.e. holding 'shift' + 'delete' = forward delete), and relocate the keyboard-away button.

P.S. If you combine this with the suggestion entitled "Create a taller keyboard (landscape & portrait) for iPad", you would get the Ultimate iPad keyboard!
e.g. look at the image: "5_iPad_landscape_tall_w_updown_keys.png"

@David Ligon: Prompt is an app, whereas PadKeys is a keyboard extension. Apps have direct access to the text area they want to move around in, and the full set of programming functions it provides. Whereas keyboard extensions are sandboxed and isolated from the actual UI components due to Apple regarding them as a greater security risk (since keyboards can be used across all apps). We're given the ability to insert text and move left and right, as well as send a backspace character. That's it. And we get information on the characters before and after the cursor to some distance out, as strings. Nothing about line breaks.

Some third-party keyboards try to implement up and down by guessing the number of characters on a typical iPhone screen and moving that many to the left or right to get to the next line. We've opted to avoid this due to the inconsistent results. We've put in an enhancement request to Apple to grant third-party keyboards access to up and down movement functions, but there has been no response. I'd recommend putting in a request yourself, since the more users they hear from wanting this functionality, the better the chances they will listen.

This is exactly it. We started out with a plan to do just this, but Apple does not provide "move up" or "move down" in their API that we can use. Nor does it even let us move the cursor to the previous or next row with the left/right API.